Pencil and method of finishing same



Aug. 1, 1933. WI DDDD KE 1,920,361

eeeeeeeeeeee t 1 Fcj JT Aug. 1, 1933. w. DANEKE 1,920,36l

PENCIL AND METHOD OF' FINISHING SAME Filed May 18, 1932 2 Sheets-Sheet 2 Ilh'llll Y z/ ,7 ATT EY5 Patented Aug, 1, 1933 UNITED STA-` V PENCIL AND MTHOD' OF FINISHING `SAMEV i William DanekeQLinden, J assignor to Joseph Dixon Crucible Company, J Corporation of New Jersey ersey City, VN. J., a U

i Application Mayias,v 1932. seriai rnirsiliru.

i; cl aims. (ol. 41-48.)

The invention relates f to an improvement] in' the art of finishing or coating pencils and the like. Each pencil to be finished or coated comprises' a marking material, such as graphite or 5 crayon, enclosed in an elongated sheath,- usually round or polygonal in cross-section, compo's'ed of suitable material, such* as wood, paper'or compo'sition. The periphery of the sheath'f or body portion is ,commonly finished or cOatedb with paint or other coloring material preferably in a plurality ofcoats `of such character as to provide a glossy surface. The object of this invention is to provide an improved method of finishing a pencil of this character7 to give itv an attractive and distinctive appearance due to the manner in which the: peripheral surface' of the pencilV sheath isioperated upon, and to' the color eifects applied thereto. ToVthis end the' invention resides in the improved method of finishing'pencils and the like hereinafter fully described and particularly pointed outin the appended claimsx i 1' In the accompanying drawings illustrating a'V. pencil produced by carrying outbthe invention in a preferred manner and the -various steps by which the pencil is finished,, Fig. 1 is a side elevation of an improved penciliproduced according to the method of thetinventio'nFigs. 2, 3, nandl 5 are fragmentary cross-sections'V through thef' pencil on argreatly enlarged scale,-`l ='ig. 2 show-H ing the perphery ofV therbodyportion of ffthe pencil before the application of any paint. or' finishing material. thereto,` Fig. `3 showing the pencil with aprimary coat or layer of fi'nishing material, Fig. 4 showingthe' pencil after knurling following the application of the primary coat, and" Fig'; 5 showing the penciiV with two'V` coats of finishing material applied thereto' Fig. 6 is a longitudinal sectionl on an enlarged scale ofV a devicethrough which the pencil body is passed and by which the material Arof the' secondary coat may be variably distribiited before this coat has had time to` dry or harden; Fig. "7 is'a cross-section on an en-'V larged scale showing'the finished pencil;- Fig. 8H is a vertical sectional view through the fdie for knurling the pencils, and the 1 feedingfrollers, showing lthe feeding rollers`` forcing' a pencil through ythe die;`Fig. 9 is a viewtaken'at rightV anglesjto that-g of-Fig. 8; Fig. 10`f'is a face-View of the die, andFig 11 is'a sectional yiew through thev die. i The improved pencil as illustrated inFigs. 1* and 7 is in general of usual form and construction, and consists of a centrally located f'lead" betweenthem. The surfaceof the body'poranisrn is used which so operates toV knurlthe jsheath without cracking, removingorV breaking or other' marking material 10 enclosed in a `lsheath'or body portion 11 of wood or composiwtion. On one end of the cpencil is'mounted a ferrule 12' for'holding aneraser 13.

The finished pencil is substantially round in cross-sec-v tion and its periphery is knurled, preferably into a series of substantially p'arallel, longitudinally extending, sp'irally arranged divisions or roundedridges .14 with'shallow grooves or depressions sy provided with an inner coat or layer 15 of paint or jfinishing material of substantially uniform`` thickness and an '-outer coat 16 of paint or other like finishing material, preferably of different color from the inner coat,

tively thick in theV grooves'30 and tion of ,the penoil i whichiis rela relatively thinover the ridges lfliso as to allow the inner coatV to show' therethrough.

Accordingto thepreferred way of carrying out the improved method of iinishing a pencil or .the like,rthe pencil body injround form, as shownl `Vin Fig. 2, is coat'ed with'paint ,orV other finishing material toformjthe -inner coat 14, as shown in Fig.`3, preferably presenting a white background for an outercoatto be' applied laterf Then, 8

'after"'the innerfcoat` has hardened suiioiently,

the surface of'the'p'encil body is depressed in portionstor kriurled', preferably by pressure, to provide ,the shallow'depressionsfio between'the o rid'ges 14,,th'e topsof thedepressions being Substantially4 in the Vsamep'ositi'ons as the corre- "sponding parts of the original surface, as shown in Fig. 4. In knurling the pencil sheath toform the spirally extending" rounded ridges 14, mech- ,through the paintlayer' 15. `The means for knurling the pencil' is disclosed in detail in Figs. 8'to`11' inclusive. The pencils 42 to lbe knurled are fed by any suitable conveying means to a pair of feed rollers 31 andl 32, by which 'they are successively lfed in end-toend relationship between another pair* of rollers 33 -and 34 which forces them'through the die indicated at 35. The uppe'r roller of each pair, that is,rthe ro11ers`31 and 33, are of rubber while the'lower rollers 32'and' 34 are of metal. The die 35 has an internal spiral fiuting 36 and is located within a boss 37 havingalateral lfiange 38 which is fsecured'to a supporting plate 39 by the screws 40; The dieis incontact With a ball thrust bearing 41 which allows it Vto turn with a minimum ofv resistance. As' the pencils 42 in round form are fed to the die as indicated in Fig.

i .coloringznaterials which'may be used, the inner i v coator layer 15 maybe a cellulose white enamel ing in the body of the pencil vas shown in Figs. 1 and 8. The outer or secondary paint coat 16 is then applied over the whole peripheral surface of the pencil body including the grooves therein and before the coating dries a device 17 for Varying the thickness of bthe applied layer 16 is used, the same leaving thick parts of the paint coat 16 in the depressions and thinner parts over the ridges, through which'the White background is seento a sufficient extent to provide a contrast between the color at the tops'of the ridges and that in the depressions or grooves. $uch a contrast may be conveniently obtained by the use of a dark. coloredouter coat. ,This' will provide ribs or lines of the secondary coat inV the depressions having substantially the colorin'g of the darl'colored second-coat material and sectionstof coloring on the tops of the ridges which are lighter, due to the whitebackgroundwhich shows therethrough As an'example of While thetop coat'l can be composed of shelflac stained with aniline dye.

The device for'causing a variable distribution of the secondary coating on the surface of the sheathconsists of a member 17 of resilient material such as rubbeighaving'a hole 18 of round cross-sectiornV that is, complementary tol the t cross-section of the pencil before it was knurled.

The member 17 is conveniently in the form of a frusturn of a cone with parallelfaces` 19and 20 and is adapted to'be mounted in a correspondinglyshaped hole in a support 21. The'round hole 18 throughcthe member 17 is provided, as

illustrated in Fig..6, with a flaring mouth 22 in the face 19 so as to facilitate the entrance of the pencil into the hole 18.

'vI`.o vary the thickness of the applied second coat or layer of paint 16 on'the pencil sheath,

one lend of the pencilis inserted into the hole 18 atfits flaring inouthr. and the whole pencil is passed through thehole by a force actingto i. move it axially, `The hole 18 is of such crosss'ectionthat, when the pencil is passed therethrough the parts of the layerV 16 on` the ridges 14 are thinned out bythe contact of the sides of theopening V18. v Obviously,, the material of `the outer or secondary coating will' be'thicker i in the depressions than on the ridges as shown in Figs 5 and 7. Theresult of this variation in thickness of the outer coat.16 is thatV the inner coat 15 will to some extent show through the outer coat on the tops of .the ridges'lwhileatb i' the depre'ssions the inner, coat will not show through or will show through to a lesser extent, thus producing afvariation in-colors over the. surface of the pencil and attractive st'riped colorl effects in general. Havingthus described the ,inventiom what I V claim aslnew isz-i 1. The method of finishing a pencil of C the ...fchara'oter described which comprises applying a primary coat of coloring material thereto, linurlingthe pencil to. p'roduce shallow depressions without removing the primary coat,` applying a second coat of coloring material, and

Varying the thickness of thesecond coat to leave Vthick portions thereof in the depressions and relatively lthin portions between said depressions. 2.` The methodof finishing a pencil of the character described which comprises applying its' periphery With 1,92o,se1

a primary coat of coloring material thereto, knurling the pencil to produce shallow depressions and ridges therebetween without removing the material of the primary coat, applying a second coat of a color different from that of the primary coat and before the secondary coat dries passing the pencil axially through a resilient Vmember provided with'a hole having a .cross-section complementary to that possessed by the pencil before the pencil was knurled.

'3. The method of finishing a round pencil which comprises applying aV primary coat of coloring material thereto, knurling the pencil to produce parallellongitudinally extending helical depressions with ridges therebetween without removing the material of the primary coat, ap-

i plyinga secondary coat of another color, and

causing a variable distribution of the material of the secondary coat by passing the pencil through a round .hole in a resilient member.

. 4.' The method'of finishing a pencil which comprises applying a primary coat of coloring material thereto, knurling the pencil by pressure after drying the primary coat to product;`

parallel longitudinally extending d'epressions with ridges therebetween without removing the material of the primary coat, applying a secondary coat `of material of different color from the first coat,` and before the secondary coat dries removing surplus portions thereof by passi ing it through a hole in a re'silient member, said hole having a cross-section complementary to that possessed by .the pencil before it was knurled. f i t 5. Thelmethod of producing color effectsV on the body of an article such as a pencil, having ,a primary coating in one color, which coniprises forming a plurality of shallow depressions at Vthe lateral surface' thereof without re'rnovingl the primary coating, applying a secondary coating in another color, and then'passing thearticle through` a member of cross-section complementary to the pencil before it was knurled,

to remove surplus material of the second coatd ing. i t

6. A pencill of the character described, com- Vprising anelongated body portion provided on itsperiphery with longitudinally-extending spivral rounded ridges with depressions located bee.,

tween'them, a primary coating' of finishing material entirely coveringy the periphery of the pencil, and arse'condary coating of finishing material disposed over the primary ,coat'ing,' said .secondary-coating partially filling the depres-` ing material disposed over the primary coating, t

the thicker portions of saidisecondary coating being` located in the depressions` and the thinner'- portions thereof being located on the ridges.

WmLIM DANnKE. 

